Add README with contribution guidelines

Author: schulzchristian

README.md

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+# Agentic Algorithm Engineering
+
+This repository contains the program definition for **Agentic Algorithm Engineering (AAE)**, a methodology that turns autonomous agents into performance engineers following the Algorithm Engineering cycle: design, analysis, implementation, and experimental evaluation, driven by falsifiable hypotheses.
+
+See [AAE.md](AAE.md) for the full program definition.
+
+## Contributing
+
+We welcome contributions! Feel free to open a pull request if you have improvements, extensions, or new ideas.